在线校验中安全阀突发频跳和颤振的预防措施

Preventive Measures for Burst Frequency Hopping and Flutter of Safety Valve in On-Line Calibration

安全阀突发频跳和颤振的异常现象都是在安全阀开启时发生,特别是生产过程中设备超压或在线校验过程中安全阀开启时引发的频跳和颤振,它直接威胁到设备安全和现场检验人员的人身安全。当前采用辅助开启装置(即安全阀在线校验仪)进行校验的方式越来越得到普及与应用,为避免和克服频跳和颤振事故发生在在线校验的过程中,文中作了如下的分析,并采取了相应的防范措施与方法。

The abnormal phenomenon of safety valve burst frequency hopping and vibration are all in the opening status, esp^cially in the overpressure or online verification. R directly threatens the safety of the equipment and the field inspectors. With The auxiliary opening device （i.e. safety valve online check instrument） popularization, in order to avoid the frequency hopping and vibration occurred in the process of online check, the paper provides some measures and methods of prevention.